Re: Polyfit with scaling - Q regarding polyconf

[Thomas Weber]

On 13/02/08 07:34 -0800, Ben Abbott wrote:
> The only thing that appears to agree with Matlab is the result from
> polyval() ... which doesn't surprise me since I'm not clear on what
> polyconf() is supposed to be doing ... I had thought one of its four
> modes of operation would be equivalent to polyval().
> 
> If you (anyone?) has insight into how the algorithm for polyconf()
> should be written, feel free to pick apart the one I posted.
> 
> Meanwhile, it does appear that we now have a polyfit() and polyval()
> which respect the scaling, and whether or not a solution for fixing
> the polyconf(), I'll rewrite polyval() to work independently of it.

Do you know 
http://www.mathworks.com/access/helpdesk/help/toolbox/stats/stats_product_page.html

There's a lot of documentation linked from there, especially
http://www.mathworks.com/access/helpdesk/help/pdf_doc/stats/stats.pdf
[beware, that file has 7.5 MB]

Someone with some knowledge in statistics around?

        Thomas